John Buck

John Buck may refer to:
 * John Buck (MP) (1566–1648), MP for Droitwich in 1601
 * John Buck (Taunton MP), MP for Taunton (1741–1745)
 * John Buck (baseball) (born 1980), American baseball catcher
 * John Buck (Onondaga politician) (died 1893), Onondaga politician
 * John E. Buck (born 1946), American sculptor and printmaker
 * John R. Buck (1835–1917), United States congressman
 * John Buck (winemaker), New Zealand winemaker
 * John Lossing Buck (1890–1975), American agricultural economist
 * John Buck of the Buck baronets